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What do you think of fish antibiotics for SHTF planning?

A reader wonders how legitimate fish antibiotics are for human use. See what Tess says on the subject.


I have a question about antibiotics.  My hubby and I are both paramedics so we are stocked when it comes to medical, except with this.  I got information from another prepper blog that I belong to about the following information.  I am curious what your thoughts on this is.  I have spent several hours researching other options, which is to order them from another country, which I question the integrity of the medication. 

Thanks so much!

Blessings, Dianna


Dianna, I have considered buying antibiotics through websites too, but am worried about the source to which these antibiotics come from.  My concern is that the meds they are selling were not stored correctly, or may be expired.  You just never know…   I have also heard from multiple websites, as well as preppers who happen to be doctors that stocking up on fish antibiotics is safe for human consumption.

It is true that many fish antibiotics contain the same active ingredients as those formulated for humans.  However, there are few considerations to keep in mind, such as using the correct dosage as to not over medicate yourself, and the differences in human metabolism vs. the metabolism rate of a fish.  Anyone who is planning on storing up fish antibiotics to use needs to do proper research, and it wouldn’t help to discuss this with a medical professional.

In an article on Survival Blog, the contributing author, who happens to be a doctor was able to purchase the below fish antibiotics online without any demand for medical license or prescription.  A paraphrase of the article and a list of the drugs are listed below. They are:

  • FISH-MOX (amoxicillin 250mg)
  • FISH_MOX FORTE (amoxicillin 500mg)
  • FISH-CILLIN (ampicillin 250mg)
  • FISH-FLEX Keflex 250mg)
  • FISH-FLEX FORTE (Keflex 500mg)
  • FISH-ZOLE (metronidazole 250mg)
  • FISH-PEN (penicillin 250mg)
  • FISH-PEN FORTE (penicillin 500mg)
  • FISH-CYCLINE (tetracycline 250mg)

NOTE: It should be emphasized that FISH-CYCLINE [and other tetracycline antibiotics of various names] can become toxic after its expiration date, unlike most of the other medications listed. So consider acquiring the other ones listed first.

These medications are available usually in plastic bottles of 100 tablets for much less than the same prescription medication at the pharmacy (some come in bottles of 30 tablets). The dosages are similar to that used in humans, and are taken two to four times a day, depending on the drug. The 500mg dosage is probably more effective in larger individuals. Of course, anyone could be allergic to one or another of these antibiotics, but not all of them. (Note that there is a 10% cross-reactivity between “-cillin” drugs and Keflex, meaning that, if you are allergic to Penicillin, you could also be allergic to Keflex). FISH-ZOLE is an antibiotic that also kills some protozoa that cause dysentery. I have also heard that colloidal silver is also a great alternative.

I hope this helps.

Thanks so much,


This article was originally published at Ready Nutrition™ on June 9th, 2013

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